dear pakasghar, welcome to hcm.
the recurrence of herpes zoster
is usually seen in immunocompromised states and severe deficiency states. Recurrences are not uncommon though, and it is better if u describe in detail the site of lesions for an accuracy in diagnosis and a good treatment. I strictly suggest you to go back to the dermatologist
along with the previous prescriptions and get a review done for the best opinion.
Meanwhile, take plenty of fruit juices, fresh vegetables cooked well, Vitamin C
rich foods(amla, citrus fruits, oranges, etc) for the improvement in ur immune system. Keep the affected area clean and do not try to pinch the lesions or scratch them since there is a great possibility of superadded infection.